dear sir,
i want to test INA125 instumentaion amplifier with single ended supply .same as data sheet ,But we have no load cell.the power supply volt 12v
we connect simply another source ranging 1 mv to 5v instead of load cell across vin+ and vin-.
+ voltage connected to V+ and ground of source connected to v-.then we shorted the power supply ground to source ground
that is v- iand iaref is ground and v+ just say .1v then difference become .1v
but the output not good.gain is very low than actual gain lets say if .1 v i get only .5v. lower gain.and also gain not consistent.
if we off the source supply the output become 11 v.
we got reference supply 10v.please help us what is the problem.